Section A: Find the subordinating conjunction in each sentence.
1. John wrote me a letter while he was away at camp.
2. If you find my wallet, please let me know.
3. When the rain stops, we can go outside.
4. Since you like strawberries, I saved some for you.
5. Let’s take a walk after we eat dinner.
Section B: Insert a comma into each sentence if needed. Write NO if a comma is not needed.
6. After the concert ends I want to talk to Mary.
7. You can do your homework while I get dinner started.
8. If you open the garage door I can get my bike.
9. Let’s play some catch before the game starts.
10. Although it is hot outside the fan helps keep air moving.
Answers: 1- while; 2-if; 3-when; 4-since; 5-after; 6-ends, I; 7-NO; 8-door, I; 9-NO; 10-outside, the.